The original method of diels and alder for the reaction of cyclopentadiene with maleic anhydride is modified for use in the elementary organic laboratory. The diels-alder reaction of anthracene with maleic anhydride measure the melting temperature of your product only if the lab instructor confirms that the thermometers in the lab can handle the relatively high melting point (250 deg c) materials. Jasperse chem 365 diels-alder lab diels-alder reaction general diels-alder reaction: a conjugated diene reacts with a dienophile to produce a. A favorite of synthetic chemists everywhere, the diels-alder reaction readily creates structural complexity. 2 week 1: develop your experimental procedure: unlike past laboratory experiments, you will spend the first laboratory period developing the experimental procedure that will be used in week 2 to run your diels-alder reaction. Diels-alder reaction heather jost lab partner: jasmina salcinovic chem2642l luise strange de soria georgia perimeter college september 29, 2004 diels-alder reaction.
Be sure to address any questions posed in the lab procedure as well as any additional questions that your ta wants you to answer you should also analyze any nmr spectra that you have from the reaction (if applicable) spectra of starting materials are available on the vista site this reaction. A neat diels-alder reaction: 9,10-dihydroanthracene-9,10- your hotplate on your lab jack, add an aluminum heat block, and turn the hotplate to about setting 6 we are trying to regulate the temperature to 210-260 c. Our manuscript entitled epoxy-functionalized porous organic polymers via diels-alder cycloaddition reaction for atmospheric water capture, is just accepted for publication in angewandte chemie and mona lab calendar department of chemistry university of fribourg courses visitors. Lab 1 report - diels-alder reaction - download as word doc (doc / docx), pdf file (pdf), text file (txt) or read online.
Closed vials in a refrigerater until a subsequent lab period, however, we will use it immediately 1 mp = 73-74 c (cas surface of the water figure 1 b the diels-alder reaction add 10 g of maleic anhydride to the 2,3-dimethyl-1,3-butadiene (from part a) in a 125 ml erlenmeyer flask. Diels-alder reaction the series of reactions run in this lab illustrate the processes of dissociation of a dimer, the diels-alder reaction, and hydrolysis of an anhydride. Pre-laboratory questions-exp 2 name: due before lab begins answer in space provided 1 define the terms diene and dienophile as they apply to the diels-alder reaction.
The diels-alder reaction of anthracene with maleic anhydride prepared by l g wade the diels-alder reaction of amhracene with maleic anhydride 159 fore leaving the laboratory microscale diels-alder reaction @ 1998 chemical education resources equipment. Viirre, r chemistry 323a: laboratory experiments 3: diels-alder syntheses of polycyclic compounds (accessed june 2007) weeks 5 & 6 assignment: staple and turn in the following results stapled to your notebook. Anthracene-maleic anhydride diels-alder adduct formula: c 18 h 12 o 3 molecular weight: 2762861 ai, thermodynamic principles of the occurrence of a diels-alder reaction in the presence of a lewis acid, zh org khim, 1982, 18, 2505-2510 lenz, hegedus, et al, 1982 lenz.
Diels-alder reacton introduction before you come to lab draw the mechanism for the diels-alder reaction, labeling the diene and dienophile 2) what would happen if cyclohexane (bp 80o c) were used as the solvent in this reaction. Experiment 3: diels-alder exo or endo background a diels-alder cycloaddition reaction can result in either and/or both endo and exo-products. Chem 334l organic chemistry laboratory revision 41 a diels-alder synthesis of cis-norbornene-5,6-endo-dicarboxylic anhydride in this laboratory exercise we will synthesize the compound cis-norbornene-5,6-endo.
I am doing a lab involving diels alder reactions: i took 1393g of maleic acid and added 15 ml of ethyl acetate into a flask then i added 1 ml of cyclopentadiene to the reaction mixture then i heated the mixture and then allowed it to cool i then collected the recrystillized. This is higher than most other solvents we use in the lab which speeds up the formation of the intermediate benzyne - an intermediate benzyne will be created in situ from anthranilic acid and isoamyl nitrite diels-alder reactions last modified by. Diels-alder reacton introduction in this reaction, a diene will be reacted with a dienophile to generate a new cyclohexene ring in a diels-alder reaction. Chem-333: lab experiment 11: the diels-alder reaction: read chapter 32, in this experiment, endo-norbornene-5,6-dicarboxylic anhydride will be synthesized from. Chem 322l experiment 3: diels alder reactions 2 the reaction is even more favorable when the diene is fixed in the s-cis form as in the case of cyclopentadiene (see figure 2. Study flashcards on lab i: diels alder reaction at cramcom quickly memorize the terms, phrases and much more cramcom makes it easy to get the grade you want.